Are there nonstop flights from Seattle (SEA) to Santiago (STI)?

No. The fastest connection is via Orlando, about 7h 34m of total flying time.

What is the fastest connection from Seattle (SEA) to Santiago (STI)?

via Orlando ≈ 7h 34m, via Fort Lauderdale ≈ 7h 35m, via Miami ≈ 7h 35m (estimated flying time, excluding layovers).

from 23,000 JAL miles, from 30,000 ANA miles (economy, one way, based on the published award charts).

Seattle–Tacoma International Airport (SEA) to Cibao International Airport (STI)・5,583 km

No nonstop flights. The fastest connection is via Orlando (MCO), about 7h 34m of flying time (layover not included).

With milesJAL 23,000 miles+ (via MIA)ANA 30,000 miles+ (via EWR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

7 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.